[plt-scheme] scaling and rotating images using image.ss

Argh.  I was still running 4.1 by mistake.  It's right there in plain sight
in 4.2.1.

Another question about the world/universe approach: how do you guys think
about randomness?  I've found that adding a bit of randomness can make games
considerably more compelling.  But it's not clear how to include randomness
in a reasonably simple way that doesn't compromise on the purely-functional
nature of the callbacks...

y

On Sat, Sep 26, 2009 at 9:49 AM, Matthias Felleisen <matthias at ccs.neu.edu>wrote:

>
> On Sep 26, 2009, at 9:43 AM, Yaron Minsky wrote:
>
> Nice to see everyone up so early on a Saturday morning!
>
>
> You're late :-]
>
>
> Where is 2htdp/universe?  I just installed the latest PLT scheme release,
> and I don't see anything called "universe" in the list of teachpacks that
> comes up when I try to add a teachpack.
>
>
>
> Use the scrollbar. It's there.
>
>
>
>
> Anyway, I'm glad to see this getting worked on.  I think one of the things
> that Scratch got right is that it provides simple image transformations,
> which turn out to be very useful in constructing simple-yet-compelling
> games.  I think having more of this stuff for drscheme will make it
> considerably more compelling for the younguns.
>
> y
>
> On Sat, Sep 26, 2009 at 9:29 AM, Matthias Felleisen <matthias at ccs.neu.edu>wrote:
>
>>
>>
>> 1. htdp/world is deprecated, use 2htdp/universe instead.
>>
>> 2. we consider the pinhole approach to our image library as a mistake. To
>> solve the problem Robby is working on 2htdp/image, a replacement for the
>> image library. When it comes out (end of semester probably) it will support
>> rotate and other such operations, plus comparisons will be much faster.
>>
>> -- Matthias
>>
>>
>>
>>
>>
>> On Sep 26, 2009, at 9:17 AM, Yaron Minsky wrote:
>>
>>  I'm playing around with the image.ss and world.ss teachpacks, and I
>>> couldn't figure out how to scale and rotate images.  Are there such image
>>> transformation functions in some other teachpack?
>>>
>>> y
>>> _________________________________________________
>>>  For list-related administrative tasks:
>>>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>>>
>>
>>
>
>
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